The idea here is that because you have telemetry feeding back the exact location of the model, it becomes a trivial task to create an auto-tracking system that will ensure a hi-gain (highly directional) video receiver antenna is always directly pointed at the model. This will, in most cases, completely mitigate the effects of the higher path-loss (ie: normally shorter range) of the 5.8GHz video equipment and even allow lower-powered video transmitters to be used so as to reduce the risk of desensitizing a 2.4GHz RC receiver and extend battery life.

Tracking antennas are a great idea - I believe it is always better to optimise the suck end of the link instead of trying to blow ever harder at the tx. Directional antennas cut down the interference too.

I'm going to bump this and put in a suggestion, a dual antenna diversity system. Perhaps a patch antenna and a tracked grid antenna?Would be very interesting for those interested in loooooooong range flying .